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Table 1 Selected geotechnical characteristics of the slope materials

From: Landslide impacts and management in Nanka area, Southeast Nigeria

Sample number Cohesion (kPa) Angle of internal friction (o) Coefficient of permeability (m/sec) Liquid Limit Plastic Limit Plasticity Index Grain size
Nanka Sample 1 5 28 1.11 X 10−6 24 Np Np Clayey Sand
Nanka Sample 2 6 29 1.47 X 10−6 23 Np Np Clayey Sand
Nanka Sample 3 8 30 1.28 X 10−6 26 Np Np Clayey Sand
Nanka Sample 4 43 8 9.51 X 10−8 75 36 39 Silty Clay
  1. Np Non-plastic